<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>案例-波仔的书架</title>
  <link rel="icon" href="D:\A~shcool_study\vue_gittee\bitbug_favicon.ico" type="image/x-icon">
  <script src="https://cdn.jsdelivr.net/npm/vue@2.7.16/dist/vue.js"></script>
</head>

<body>

  <div id="app">
    <h3>小黑的书架</h3>
    <ul>
      <li v-for="(item, index) in booksList" :key="item.id">
        <span>{{ item.name }}</span>
        <span>{{ item.author }}</span>
        <button @click="del(item.id)">删除</button>
      </li>
    </ul>
  </div>

        <script>
          const app = new Vue({
            el: '#app',
            data: {
              booksList: [
                { id: 1, name: '《红楼梦》', author: '曹雪芹' },
                { id: 2, name: '《西游记》', author: '吴承恩' },
                { id: 3, name: '《水浒传》', author: '施耐庵' },
                { id: 4, name: '《三国演义》', author: '罗贯中' }
              ]
            },
            methods:{
              del(id){
               //通过 id 进行删除数组中的 对应项 → filter
               //filter:根据条件，保留满足条件的对应项，得到一个新数组
               this.booksList = this.booksList.filter(item => item.id !== id)
              }
            }
          })
        </script>
</body>

</html>